17 Questions
What is the principal cultivated source of Pyrethrum flower?
Kenya
Which active constituent is NOT found in Carthamus tinctorius petals?
Pyrethrin
What altitude range is favorable for Pyrethrum cultivation?
1900-2700 m
For how many months does the collection of Pyrethrum flower take place?
9 months
In Iranian folklore medicine, what are the recommended uses of Safflower?
Laxative effects and treating rheumatism
Which of the following is NOT an active constituent isolated from Carthamus tinctorius petals?
Chlorophyll
What are the key active constituents found in Pyrethrum flowers that contribute to their insecticidal properties?
All of the above
Which of the following cell types in Pyrethrum flowers are responsible for producing the insecticidal esters?
Oil glands, resin ducts, and mesophyll cells
Which of the following is NOT a characteristic of the powder obtained from Pyrethrum flowers?
Presence of T-shaped hairs
Which of the following is the alcohol component of the pyrethrins found in Pyrethrum flowers?
Pyrethrolone
Which of the following is NOT a key active constituent found in Pyrethrum flowers?
Safflower
Which of the following statements is true about the constituents of chamomile flower-heads?
They are required to contain at least 0.4% of a blue volatile oil.
Which of the following statements is true about the formation of chamazulene in chamomile?
Chamazulene is formed from a sesquiterpene lactone called matricin during steam distillation.
Which of the following statements is incorrect about the constituents of chamomile?
The dried ligulate florets contain less than 0.3% of free apigenin.
What is the primary use of Anthemis nobilis Matricaria flowers mentioned in the text?
For their anti-inflammatory and spasmolytic properties.
Which of the following statements is true about the ulcer-protective properties of German chamomile?
They have been ascribed to the bisabolol-type constituents.
What is mentioned in the text as an allied drug of chamomile?
Chrysanthemum parthenium (L.) Bernh.
Test your knowledge about the chemical composition and active constituents of the Pyrethrum plant, including elements like parenchyma, T-shaped hairs, pollen grains, sclerenchymatous cells, tracheids, and epidermal cells. Explore how Pyrethrum's insecticidal properties are attributed to specific esters produced by different cell types.
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